Polycystic Ovary Syndrome (PCOS) is a hormonal condition affecting around 10% of women in their reproductive years. The term polycystic ovary refers to a condition in which the ovaries develop a large number of tiny cysts (fluid-filled sacs).

Women with PCOS may have ovaries that produce too much androgen (male hormones). High levels of androgen interfere with ovulation, causing irregular menstruation, a common symptom of PCOS.

It is important to know that some women with PCOS do not have polycystic ovaries, while others with cysts in the ovaries do not have the syndrome.